You can sleep if you feel sleepy.

想睡的话，就睡吧。

I felt sleepy after all that work.

把所有的工作做完后我觉得很困。

He sometimes feels sleepy in the morning.

早晨他总是感到很困乏。

Yes. I do. Sometimes I feel sleepy in class.

是的，我有。有时我课上的时候感觉很困。

This will prevent you from feeling sleepy in the mornings.

这样你就不会早上起来昏昏沉沉的了。

A person might say " I feel sleepy" or " I feel energetic" .

一个人可能会说" 我感到困倦" 或" 我感到精力充沛" 。

You're feeling sleepy, your breath slows, and suddenly you're asleep.

你开始慢慢入睡，呼吸变缓，突然间你睡着了。

You've probably noticed that at night you naturally start feeling sleepy.

你可能已经注意到，在晚上你自然会开始感到困倦。

The heavily perfumed smoke in the room was making him feel sleepy and stupid.

教室里浓重的带香味的烟雾弄得他糊里糊涂地想睡觉。

The seats were comfortable and after a calming drink, we felt sleepy and closed our eyes.

座位是很舒适的，喝了点镇静剂后，我们的眼睛就闭上了，感到昏昏欲睡似的。

These circadian rhythms are the control switch that tells us when to feel sleepy or awake.

这些昼夜节律是控制开关，告诉我们何时感到困倦或清醒。

They felt sleepy and serene and happy all but Applegate Skinner, who didn't care for birds at bedtime.

他们全都泛起了睡意，感到平静而幸福只除了阿普尔盖特·斯金纳，因为他在睡觉时不喜欢鸟来打扰。

That made him feel sleepy at work, and he remembers not being " at the top of his game" .

这让他在片场昏昏欲睡，他记得自己并没有“处于最佳状态”。

So that means they might feel sleepy at the wrong time of day – for example, when they're at work.

所以这意味着他们有可能会在错误的时间产生困意，例如在工作的时候。

We should feel sleepy as the light dissipates.

当光线消散时，我们应该感到困倦。

'You feel sleepy, don't you, my dear?

“你觉得困了，是吗，亲爱的？”

But, if you take them, you may feel sleepy.

但是，如果你服用它们，你可能会感到困倦。

If you feel sleepy, take a nap.

如果你觉得困了，打个盹。

The warmth from the fire made her feel sleepy.

【sleepy，sleepily，sleepiness】炉火的温暖使她昏昏欲睡。

We certainly yawn more when we’re feeling sleepy or sluggish, but why is this?

当我们感到困倦或行动迟缓时， 我们当然会打哈欠， 但这是为什么呢？